Eldritch Vengeance

While casting this spell you will grow a small tentacle on a piece of exposed skin. If you are attacked during this effect the tentacle will lash out, and roll to attack using your spellcasting modifiers. The tentacle will act outside of actions and deals 1d8+[Spellcasting Mod] bludgeoning damage.

The damage of the tentacle increases by 1d8 per Spell evel.